Which CloudWatch object fires an action (SNS, EC2, Auto Scaling) when a metric crosses a threshold for N consecutive periods?
- A CloudWatch alarm
- An S3 bucket policy
- A CloudFront edge cache
- A Route 53 record set
Show answer and solution
Correct answer: A. A CloudWatch alarm
Alarms watch a metric over a period and trigger actions when breached.
The other options are unrelated.